// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) INRIA
//
// This file must be used under the terms of the CeCILL.
// This source file is licensed as described in the file COPYING, which
// you should have received as part of this distribution.  The terms
// are also available at
// http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt

function [s]=%lss_c_lss(s1,s2)
    //  u=[u1;u2]    y=y1+y2
    //operation  s=[s1,s2] in state-space

    [s1,s2]=sysconv(s1,s2);
    [a1,b1,c1,d1,x1,dom1]=s1(2:7);
    [a2,b2,c2,d2,x2]=s2(2:6);
    [n1,n1]=size(a1);[n2,n2]=size(a2);
    [p1,m1]=size(d1);[p2,m2]=size(d2);
    a1=[a1 0*ones(n1,n2);0*ones(n2,n1) a2];
    b1=[b1 0*ones(n1,m2);0*ones(n2,m1) b2];
    s=tlist(["lss","A","B","C","D","X0","dt"],a1,b1,[c1 c2],[d1 d2],[x1;x2],dom1);
endfunction